If not designed and installed properly, wiring inside cable trays may pose hazards such as fire, electric shock, and arc-flash blast events. Below, we analyze the common cable tray safety hazards and discuss how each. Safety of a cable tray is not a matter of compliance with codes, but a matter of saving human life and billions of dollars' worth of infrastructure. This manual will offer practical engineering knowledge. The use and installation of cable trays is covered by legally enforceable OSHA regulations in 29 CFR 1910. Cable trays can be part of a planned cable management system to support, route, protect, and provide a pathway for cable systems. By segregating power and data.